public void UserAgent()
    {
        HttpRequestMessage message = new HttpRequestMessage();
        message.AddUserAgent();

        var productVersion = typeof(KvMetadata).GetTypeInfo().Assembly.GetName().Version;
        string expectedUserAgent = string.Format("OrchestrateDotNetClient/{0}", productVersion);
        Assert.Contains(expectedUserAgent, message.Headers.UserAgent.ToString());
    }